Siphon-filter



1. wuRscHER.

SIPHON FILTER.

APPLICATION FILED mn il, 1920.

A1 ,37839251 Patented May 24, 1921.

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-UNITED STATES ATENT OFFICE-" JOSEPH WURSGHER, orsfr. rAUL, :miIninnsfria'` To all whom it may concern:

j Be itknown that l, `Josnrn VVURsoHER, a citizen of the UnitedStates of America, reslding at the city of St. Paul, in the county of Ramsey and State of Minnesota,

have invented certain new and useful Improvements in Siphon-Filters, of which the following is a specification.

My present invention relates generally to siphons and more particularly to siphon heads, my object being the provision of a siphon head which will prevent the entrance of foreign matter with the Huid taken into the siphon, and which embodies a readily renewable strainer for this purpose and one capable of effective use for intended purposes.

In the accompanying drawing which illustrates my invention and forms a part 0f this specification, Y

Figure 1 is a side view, partly in section, of my improved siphon,

Fig. 2 is a section taken axially through the Siphon head and a part of the tube, and

Fig. 3 is a cross section taken substantially on line 3-3 of Fig. 2.

Referring now to these figures I have shown a Siphon including a flexible tube 10 to one end of which is a discharge valve 11 and to the opposite end of which my improved siphon head is attached. This head includes a hollow stem 12, one end of which is integral with a circular disk 13 and is provided with radial openings 14 adjacent to the inner surface of the disk 13 and in communication with the bore 15 of the stem.

The opposite end of the stem is adapted for connection with the adjacent end of the flexible tube 10, and, for this purpose, projects beyond a second circular disk 16 of approximately the diameter of the disk 13 and spaced from the latter to form between the disks an annular intake chamber around the intermediate portion of the stem 12 between which and the bore of the stem the apertures 14 constitute passageways.

The strainer is preferably constituted by one or more layers of fabric 17 and is of bag-like form to inclose the head with the exception of a portion of the projecting end of the tube 12 around which the neck 18 of the bag is secured at a point adjacent to the outer surface of the disk 16. When the baglike strainer is thus connected, a clamping ring 19 is preferably passed around the same along the periphery of the outer disk 13 to i y-sIrHoN-rrn'rER.

' Specification of Letters I Patent.

annular groove 20 with .which` this vdisk/,is provided, so as to thus draw the bag snugly and tightly between the disks 13 and 16 where it forms the wall of the intake chamber before referred to.

Thus material drawn into the tube 12 of the siphon head passes through the straining wall of the intake chamber'on its way into the siphon tube 10, the straining wall serving to exclude particles of dirt and other extraneous matter so that the discharge.

Patentedk May 24, 192i. lApplication filed March 11, 1920` lSerial No. 364,987. y'

draw a iportiongof the strainer bag into Vlan from the siphon will be clean and free from impurities.

t is obvious from the foregoing that the strainer thus formed may be readily cleansed by scraping or brushing the external surface of the bag-like straining member and that the straining member may be readily renewed from time to time as it becomes necessary or augmented in thickness as it becomes desirable to do so.

I claim:

1. A siphon head consisting of an axial tube having thereon a pair of spaced circular disks with one of which one closed end of the tube is integral, said tube having a series of apertures through its wall adjacent to the inner surface of the last mentioned disk forming communicating passageways between its bore and the space between the disks, and having its opposite end projecting beyond the outer surface of the other disk to form a connecting nipple, and a straining member of bag-like form extending around the two disks and having a neck portion secured around the projecting end of the stem and a portion extending between the disks and forming an annular wall for the said space between'the disks.

2. A Siphon head consisting of an axial tube having thereon a pair of spaced circular disks with one of which one closed end of the tube is integral, said tube having a series of apertures through its wall adjacent to the inner surface of the last mentioned disk forming communicating passageways between its bore and the space between the disks, and having its opposite end projecting beyond the outer surface of the other disk to form a connecting nipple, and a straining member of bag-like form extending around the two disks and having a neck portion secured around the projecting end of the'stem and a portion extending between the disks and forming an annular wall for the said space between the disks, tures through its wall in communication said disk at the closed end of the stemrhavwith its bore between the said disks, and a ing an annular groove, and a clamping ring fabric strainer of bag-like form having a extending around the adjacent portion of. lneokportion secured to the projecting end 16 the strainer bag to force the same into the of the stem and having a portion forming an groove of the disk as described. annular straining wall betweien the sur- 3. A Siphon head including a hollow axial rounding edges of the disks, as described.

stem, a pair of lengthwise spaceddisks oar- In tesiimonywheieof I hereunto aix my ried by the stem and one of which is located signature. atand closes one end of the stem, said stem v having an opposite projecting end andA aper- JOSEPH; WURSCHER. 

